I'm trying to build a CB500 at the moment and have bought one of these:
https://www.digital-speedos.co.uk/gauges-c4/motorcycle-gauges-c27/tachometers-c32/koso-rx2nr-race-tachometer-12v-or-9v-battery-temperature-neutral-light-p32
I have not wired it up yet, but it looks pretty straightforward. Maybe a bit of overkill, but at least it will look good. 😁

Thanks for the reply.
I have the software installed on an Windows XP laptop. The manual says you must you up to Windows 2000, but i could not get the software to word on my old 2000 laptop!
I have tried all the usual two stroke sources, but with out much help. Padgetts can sort it out, but they need my bike, so it looks like I may have to venture south of the border...

Hello,
I have been trying to set up an HRC data logger on a Honda RS250 NX5, without much luck.
I have uploaded the disc to my laptop etc, but when I connect the laptop to the bike, the laptop does not recognise the USB. I need to update the USB driver but no update can be found. I have found various 'updates' on line but nothing has worked so far.
The cd, usb cable, data logger and loom I have are all new. I know the logger is generic to all RS and CBR race bikes, so I was hoping someone may be able to give a bit of advice on the USB set up.
Cheers,
Innes

The HRC green reservoir tube 'sweats' which is not too good. You need tygon hose. See link below. https://www.kurveygirl.com/shop/index.php?cPath=106&osCsid=r6jn57gj5fd4gkvfdi97a4s4s3https://www.kurveygirl.com/shop/index.php?cPath=106&osCsid=r6jn57gj5fd4gkvfdi97a4s4s3 Or you could you use one of those motocross master cylinders with the built in reservoir. Hope this helps.